carbon-lang/.agents/skills/code_style/SKILL.md

---

name: Code style description:

Instructions for code formatting and style guidelines in the Carbon
toolchain.

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Code style

License

• Licenses: All Carbon files outside of third_party/ should have a license following CONTRIBUTING license instructions.

Formatting

• Bazel: Use pre-commit run buildifier --files <file.bzl> to format Bazel files.
• C++: Use pre-commit run clang-format --files <file.cpp> to format C++ files.
• Carbon: The toolchain's format command doesn't work well right now. Instead, try to format Carbon code based on other Carbon files and the C++ style.
• Markdown: Use pre-commit run prettier --files <file.md> to format markdown files.
• Python: Use pre-commit run black --files <file.py> to format Python files.

Style Guides

• C++ style: Follow the Carbon C++ Project Style Guide.
• Markdown style: Follow the Google developer documentation style guide.
• Python style: Follow the PEP 8 style guide.
  • Wrap code and comments to 80 columns.
  • Run pre-commit run flake8 --files <file.py> to check Python style.